Advanced filters
The three logic groups currently available are And, Not, and Count. These logic groups have the exact same functionality as their counterparts on the official trade site.
You can create a new logic group in a subfilter by clicking the + button in the bottom right of the window, below where the list of modifiers and logic groups for a subfilter is.
Unlike the official trade site, the tool supports multiple subfilters. This provides the tool with, effectively, an or functionality. To create a new subfilter, click the + button in the top left of the window. To edit the subfilter, click on the subfilter's name. It will open.
The tool also supports a few pseudo modifiers. These, as of August 12, 2020, include #% total resistance, #% elemental resistance, #% quality, #% item quantity (for maps), etc. For pseudo modifiers like "#% total resistance," you can specify a minimum/maximum value.
Example filter for map rolling:
